As a 20 year professional in the high end audio industry, Dopogue is correct.
A turntable must isolate the phono cart from internal and external vibrations which will distort the output of the phono cartridge. Once a cart is isolated can you hear what the cartridge is capable of doing. So the most important step is the table.
Once you have a good table then come the arm which must drain away any extranous vibration. The arm must be frictionless so the cart can track. So the arm is next.
Then and only then can you hear the cartridge.
The better the cartridges resolution the better the phono stage so they phono stage and cartridge really are equal in their importance.